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- Title
Measurement of the principal quantum number distribution in a beam of antihydrogen atoms.
- Authors
Kolbinger, B.; Amsler, C.; Cuendis, S. Arguedas; Breuker, H.; Capon, A.; Costantini, G.; Dupré, P.; Fleck, M.; Gligorova, A.; Higaki, H.; Kanai, Y.; Kletzl, V.; Kuroda, N.; Lanz, A.; Leali, M.; Mäckel, V.; Malbrunot, C.; Mascagna, V.; Massiczek, O.; Matsuda, Y.
- Abstract
The ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration plans to measure the ground-state hyperfine splitting of antihydrogen in a beam at the CERN Antiproton Decelerator with initial relative precision of 10 - 6 or better, to test the fundamental CPT (combination of charge conjugation, parity transformation and time reversal) symmetry between matter and antimatter. This challenging goal requires a polarised antihydrogen beam with a sufficient number of antihydrogen atoms in the ground state. The first measurement of the quantum state distribution of antihydrogen atoms in a low magnetic field environment of a few mT is described. Furthermore, the data-driven machine learning analysis to identify antihydrogen events is discussed.
- Subjects
EUROPEAN Organization for Nuclear Research; QUANTUM measurement; ATOMIC beams; HYPERFINE coupling; COLLISION spectroscopy; ATOMIC spectroscopy; ANTIPROTONS
- Publication
European Physical Journal D (EPJ D), 2021, Vol 75, Issue 3, pN.PAG
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/s10053-021-00101-y